Abstract:
An example of a piping structure of a tire vulcanizer to which the present invention is applied has a central mechanism 1 of the tire vulcanizer as illustrated in FIG. 1. The central mechanism 1 has a bug head 2, a hydraulic cylinder 3, and exhaust circulation path pipes 4. In addition, the central mechanism 1 has a bladder (not illustrated) which may be expanded and contracted as a vulcanizing medium is supplied into the bladder. One end of the exhaust circulation path pipe 4 is connected to an interior of the bladder, and the two exhaust circulation path pipes 4 are connected to each other through a bypass pipe 5. The other end of the exhaust circulation path pipe 4 is connected to an exterior of the central mechanism 1.
Abstract:
Exemplary methods for manufacturing a wire and resultant wires are disclosed herein. The method includes extruding a receptor cross-linkable polymer that is substantially free of curing agent about a conductive core and extruding a donor polymer in association with a curing agent. The method includes disposing the donor polymer about the receptor polymer and conductive core to create a multi-layer wire pre-product. The method also includes heat curing a multi-layer wire pre-product to form a wire.
Abstract:
An apparatus for vulcanizing a tire comprises: a side mold segment provided with a face for shaping the outer surface of a tire sidewall portion, and an opposite face not serving for shaping; and a heater part for vulcanizing the raw tire. The heater part is disposed adjacently to the side mold segment to heat the raw tire abutting on the side-shaping-face from the side of the face not serving for shaping. The side mold segment is provided with a flow path through which a first fluid whose temperature is lower than the vulcanization temperature of the raw tire can flow to prevent over-vulcanization of the sidewall portion.
Abstract:
Exemplary methods for manufacturing a wire and resultant wires are disclosed herein. The method includes extruding a receptor cross-linkable polymer that is substantially free of curing agent about a conductive core and extruding a donor polymer in association with a curing agent. The method includes disposing the donor polymer about the receptor polymer and conductive core to create a multi-layer wire pre-product. The method also includes heat curing a multi-layer wire pre-product to form a wire.
Abstract:
A method and system to dry crack-free and high strength skin including an inorganic binder of an average particle size (D50) in a range between 10 nm and 700 nm on a porous ceramic body. The method includes supporting the honeycomb body on an end face such that axial channels and outer periphery are substantially vertical. A gas is flowed past the honeycomb body substantially parallel to the axial channel direction, substantially equally around the outer periphery of the skin, to uniformly dry the skin to form a partially dried skin under mild conditions. Then the partially dried skin may be dried more severely resulting in rapidly dried crack-free and high strength skin.
Abstract:
Exemplary hot pressing equipment for forming spherical portions of light guide bodies includes a top pressing plate, a bottom pressing plate facing to the top pressing plate, a heating unit located in the top pressing plate or the bottom pressing plate to raise the temperature of the top pressing plate and the bottom pressing plate, and a cooling tube located between the top pressing plate and the bottom pressing plate. Grooves having spherical end surfaces array on the top pressing plate and the bottom pressing plate. The cooling tube delivers cooling fluid to reduce the temperature of the top pressing plate and the bottom pressing plate.
Abstract:
A mould for forming a wind turbine blade is formed in two halves, each half 1a comprising a sandwich structure of a perforated outer layer, an inner aluminium honeycomb structure and an inner impermeable heat-conducting layer. An article in the form of a mat of glass fibre impregnated with epoxy resin is placed in the mould. A supply chamber 6 supplies heated pressurised air to the mould which passes into the honeycomb core of the mould through the perforated outer layer, and back through the outer layer into two exhaust chambers 7. A row of supply conduits 13 and exhaust conduits 16 connect the exhaust chambers 7 to the supply chamber 6. The air in each conduit 13, 16 is heated by a respective heat exchanger 18 supplied with heated water 9. The heated air cures the epoxy resin, and the mould is then cooled by supplying cold water to the heat exchangers 18, which, in turn cools the air supplied to the mould. The water used to cool the mould is then re-used for the subsequent heating of another article placed in the mould, in order to save energy. Alternatively, the article in the mould may be cooled using a separate supply of air which is not cooled in the heat exchangers 18.
Abstract:
An adjustable support is used to support a preformed mold in a molding operation. The adjustable support includes an aggregate or particulate material that in a now stressed or reduced stress state is flowable to allow shaping thereof to effectively support a back face of the preformed mold. The adjustable support is then jammed to rigidify or fix the shape thereby effectively supporting the preformed mold. The adjustable support is changed from an adjustable state to a support state preferably by applying a vacuum pressure to the aggregate material. In the adjustable state an airflow can be introduced to the aggregate material to allow movement and/or displacement of the material.
Abstract:
Exemplary methods for manufacturing a wire and resultant wires are disclosed herein. The method includes extruding a cross-linkable polymer that is substantially free of curing agent about a conductive core, then adding a curing agent to the extruded wire pre-product, then heat-curing the extruded wire pre-product.
Abstract:
A method of forming a composite article (22) comprises the steps of providing a tool (26) having a mold surface (24), providing a preform (62), and disposing the preform (62) on the mold surface (24). The method further comprises the steps of heating the mold surface (24) within a first period of time (Tt1), applying pressure to the preform (62) within a first period of time, and maintaining temperature of the mold surface (24) for a second period of time (Tt2). The method further comprises the steps of maintaining pressure for a second period of time, reducing pressure on the composite article (22), cooling the mold surface (24) within a third period of time (Tt3), and removing the composite article (22) from the mold surface (24). The total of Tt1+Tt2+Tt3 is generally no greater than about 30 minutes. A thermal system (20) comprising a heater-subsystem, and optionally, a chiller-subsystem, can be used to heat and cool the mold surface (24).